Home / 106,886.12-147,438.59-70,587.90

Finding the Fourth Proportional to 106,886.12, 147,438.59 and 70,587.90

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Solution

The fourth proportional to 106,886.12, 147,438.59 and 70,587.90 is: 97,368.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,886.12 : 147,438.59 = 70,587.90 : x
  2. Step 2: Convert to fraction form
    106,886.12/147,438.59 = 70,587.90/x
  3. Step 3: Cross multiply
    106,886.12x = 147,438.59 × 70,587.90
  4. Step 4: Simplify right side
    106,886.12x = 10,407,380,911.72
  5. Step 5: Solve for x
    x = 10,407,380,911.72/106,886.12
  6. Step 6: Final answer
    x = 97,368.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.